<i>L</i>. <i>verrucarum</i> at 5d post-blood meal.

<p>After 5 d <i>B</i>. <i>bacilliformis</i> colonized the competent sand fly digestive tract. As observed at 72 h following the blood meal, bacteria were found in the abdominal midgut <b>(A-B)</b> as well as the ileum (<b>C-F</b>). Images were acquired with fluorescence (GFP) or phase contrast (PC) microscopy and the magnification used is indicated under each image pair.